Katie Ledecky
World records

No.
Event
Time
Meet
Location
Date
Age
1
1500 m freestyle
15:36.53
2013 World Championships
Barcelona, Spain
July 30, 2013
16
2
800 m freestyle
8:13.86
2013 World Championships
Barcelona, Spain
August 3, 2013
16
3
1500 m freestyle (2)
15:34.23
2014 TWST Senior Invitational
Shenandoah, Texas
June 19, 2014
17
4
800 m freestyle (2)
8:11.00
2014 TWST Senior Invitational
Shenandoah, Texas
June 22, 2014
17
5
400 m freestyle
3:58.86
2014 National Championships
Irvine, California
August 9, 2014
17
6
400 m freestyle (2)
3:58.37
2014 Pan Pacific Swimming Championships
Gold Coast, Australia
August 23, 2014
17
7
1500 m freestyle (3)
15:28.36
2014 Pan Pacific Swimming Championships
Gold Coast, Australia
August 24, 2014
17
8
1500 m freestyle (4)
15:27.71
2015 World Championships
Kazan, Russia
August 3, 2015
18
9
1500 m freestyle (5)
15:25.48
2015 World Championships
Kazan, Russia
August 4, 2015
18
10
800 m freestyle (3)
8:07.39
2015 World Championships
Kazan, Russia
August 8, 2015
18
11
800 m freestyle (4)
8:06.68
2016 Arena Pro Swim Series
Austin, Texas
January 17, 2016
18
12
400 m freestyle (3)
3:56.46
2016 Summer Olympics
Rio de Janeiro, Brazil
August 7, 2016
19
13
800 m freestyle (5)
8:04.79
2016 Summer Olympics
Rio de Janeiro, Brazil
August 12, 2016
19
14
1500 m freestyle (6)
15:20.48
2018 TYR Pro Swim Series
Indianapolis, Indiana
May 16, 2018
21

Question: With what time did Katie Ledecky break the world record in the 1500-meter freestyle and what was her previous record?
Answer: Ledecky broke the world record in the 1500-meter freestyle with a time of 15:34.23, bettering her previous mark of 15:36.53.